Base lifting manual wheelchair with adjustable wheel tread

Abstract

The utility model discloses a wheel track adjustable base lifting manual wheelchair which comprises a bottom plate, a pair of guide rails is arranged at the bottom of the bottom plate, sliding blocks moving along the guide rails are arranged at the two ends of each guide rail, a wheel carrier is installed between the sliding blocks at the same end, walking wheels are arranged on the wheel carrier, and the walking wheels are arranged on the wheel carrier. An adjusting mechanism for adjusting the wheel distance between the two walking wheels is arranged at the bottom of the bottom plate; a seat plate is mounted at the upper part of the bottom plate through a scissors fork type lifting frame, and a backrest and armrests are arranged on the seat plate; the adjusting mechanism for adjusting the wheel distance between the two walking wheels is arranged at the bottom of the bottom plate, so that the wheel distance can be adjusted, the walking device is suitable for being pushed on some narrow small road surfaces, in addition, the seat plate is installed on the upper portion of the bottom plate through the scissor fork type lifting frame, the height of the seat plate can be adjusted, and the walking device is convenient to use. And practical people with different figures can be satisfied.

Description

Technical Field

[0001] The utility model relates to the technical field related to wheelchairs, in particular to a manual wheelchair with an adjustable wheelbase and a lifting base. Background Art

[0002] A wheelchair is a chair equipped with wheels that can assist with walking. It is an important means of transportation for the injured, sick, and disabled for home rehabilitation, transportation, medical appointments, and activities. It not only provides mobility for the physically disabled and those with limited mobility, but more importantly, it facilitates family members' mobility and care for the patient, allowing them to exercise and participate in social activities. However, the running wheels of existing wheelchairs are fixed to the wheelchair frame and cannot be adjusted, making them difficult to maneuver on narrow paths. Furthermore, the height of most existing wheelchairs is difficult to adjust, making them uncomfortable for both short and tall people. Utility Model Content

[0003] In order to solve the problems in the prior art that the running wheels of existing wheelchairs are all fixed to the wheelchair frame and the wheelbase cannot be adjusted, which makes it difficult to push the wheelchair on some narrow roads, and increases the difficulty of pushing the wheelchair. Moreover, the height of most existing wheelchairs is difficult to adjust, which makes it extremely uncomfortable for short or tall people to sit in the wheelchair. The utility model provides a manual wheelchair with an adjustable wheelbase and a lifting base.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The utility model discloses a manual wheelchair with an adjustable wheelbase, which comprises a bottom plate, a pair of guide rails being provided at the bottom of the bottom plate, a sliding block being provided at both ends of each guide rail and moving along the guide rail, a wheel frame being installed between the sliding blocks at the same end, and running wheels being provided on the wheel frame, an adjustment mechanism being provided at the bottom of the bottom plate for adjusting the wheelbase between the two running wheels, and a seat plate being installed at the upper part of the bottom plate via a scissor-type lifting frame, and a backrest and armrests being provided on the seat plate.

[0006] As an optimal technical solution of the present invention, the adjustment mechanism includes forward and reverse screw rods arranged at the bottom of the base plate and parallel to the guide rail, and the forward and reverse screw rods are provided with movable blocks that move toward each other along the forward and reverse screw rods, and the movable blocks are fixed one-to-one with the wheel frame.

[0007] As a preferred technical solution of the present invention, a vertical downward protective enclosure is provided around the seat plate, and the protective enclosure is provided with reserved holes for adjustment with the scissor-type lifting frame.

[0008] As a preferred technical solution of the present invention, a rotating shaft is installed at the bottom of the base plate, one end of the rotating shaft is connected to one end of the forward and reverse screw rods through a coupling, and the other end of the rotating shaft is provided with a rotating handle.

[0009] As a preferred technical solution of the present invention, a rubber cushion is provided on the seat plate.

[0010] As a preferred technical solution of the present invention, the sliding block and the movable block are both fixed to the wheel frame by positioning bolts.

[0011] The beneficial effects of the utility model are:

[0012] 1. This type of manual wheelchair with adjustable wheelbase is based on a base plate, and a wheel frame that moves along a guide rail is provided at the bottom of the base plate. An adjustment mechanism is provided at the bottom of the base plate to adjust the wheelbase between the two running wheels, so that the wheelbase can be adjusted, making it suitable for pushing on some narrow roads. In addition, a seat plate is installed on the upper part of the base plate via a scissor-type lifting frame, so the height of the seat plate can be adjusted to meet the needs of practical people of different body shapes. The height adjustment mechanism through the scissor-type lifting frame does not take up too much space and has a small volume after contraction, which will not affect the overall size and layout of the wheelchair, and is suitable for existing wheelchairs.

[0013] The adjustment mechanism of this manual wheelchair with adjustable wheelbase is adjusted through forward and reverse screw rods. When the forward and reverse screw rods are rotated, the movable blocks move toward each other, so that the two wheel frames can move synchronously, which facilitates wheelbase adjustment and has the characteristics of simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural diagram of a manual wheelchair with an adjustable wheelbase and a lifting base;

[0016] Figure 2 The utility model is a structural schematic diagram of an adjustment mechanism of a manual wheelchair with an adjustable wheelbase and a lifting base.

[0017] In the figure: 1. Base plate; 2. Guide rail; 3. Sliding block; 4. Wheel frame; 5. Travel wheel; 6. Adjustment mechanism; 7. Scissor-type lifting frame; 8. Seat plate; 9. Backrest; 10. Armrest; 11. Protective enclosure; 12. Forward and reverse screw rods; 13. Movable block; 14. Rotating shaft; 15. Rotating handle; 16. Coupling. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0019] Example: Figure 1-2 As shown, the utility model is a manual wheelchair with adjustable wheelbase, comprising a base plate 1, a pair of guide rails 2 being provided at the bottom of the base plate 1, a sliding block 3 moving along the guide rails 2 being provided at both ends of each guide rail 2, a wheel frame 4 being installed between the sliding blocks 3 at the same end, and a running wheel 5 being provided on the wheel frame 4, an adjusting mechanism 6 for adjusting the wheelbase between the two running wheels 5 being provided at the bottom of the base plate 1; a seat plate 8 being installed on the upper part of the base plate 1 via a scissor-type lifting frame 7, and a backrest 9 and an armrest 10 being provided on the seat plate 8; based on the base plate 1, a pair of guide rails 2 being provided at the bottom of the base plate 1, a sliding block 3 moving along the guide rails 2 being provided at both ends of each guide rail 2, a wheel frame 4 being installed between the sliding blocks 3 at the same end, and a running wheel 5 being provided on the wheel frame 4, The movable wheel frame is provided with an adjustment mechanism 6 at the bottom of the base plate 1 for adjusting the wheelbase between the two running wheels 5, so that the wheelbase can be adjusted, which makes it suitable for pushing on some narrow roads. In addition, a seat plate 8 is installed on the upper part of the base plate 1 via a scissor-type lifting frame 7, so that the height of the seat plate can be adjusted to meet the practical needs of people of different body shapes. The height adjustment mechanism of the scissor-type lifting frame 7 does not occupy too much space and has a small volume after contraction, which will not affect the overall size and layout of the wheelchair and is suitable for existing wheelchairs.

[0020] The adjustment mechanism 6 includes a forward and reverse screw rod 12 disposed at the bottom of the base plate 1 and parallel to the guide rail 2. The forward and reverse screw rod 12 is provided with a movable block 13 that moves toward each other along the forward and reverse screw rod 12. The movable block 13 is fixed in a one-to-one correspondence with the wheel frame 4. The adjustment mechanism 6 is adjusted by the forward and reverse screw rod 12. When the forward and reverse screw rod 12 is rotated, the movable block 13 moves toward each other. This allows the two wheel frames 4 to move synchronously, facilitating wheelbase adjustment, and has a simple structure.

[0021] A vertical downward protective enclosure 11 is provided around the seat plate 8 to cover the scissor-type lifting frame 7 to prevent it from being stuck inside, and a reserved hole for adjusting with the scissor-type lifting frame 7 is provided on the protective enclosure 11.

[0022] A rotating shaft 14 is installed at the bottom of the base plate 1, one end of the rotating shaft 14 is connected to one end of the forward and reverse screw rods 12 via a coupling 16, and a rotating handle 15 is provided at the other end of the rotating shaft 14, which facilitates the rotation adjustment of the forward and reverse screw rods 12.

[0023] The seat plate 8 is provided with a rubber cushion to ensure better comfort.

[0024] The sliding block 3 and the movable block 13 are both fixed to the wheel frame 4 by positioning bolts, which facilitates installation and disassembly.

[0025] Working principle: Based on the base plate 1, a wheel frame that moves along the guide rail 2 is provided at the bottom of the base plate 1. An adjustment mechanism 6 for adjusting the wheelbase between the two running wheels 5 is provided at the bottom of the base plate 1. In this way, the wheelbase can be adjusted, which makes it suitable for pushing on some narrow roads. In addition, a seat plate 8 is installed on the upper part of the base plate 1 via a scissor-type lifting frame 7. The height of the seat plate can be adjusted to meet the needs of practical people of different body shapes. The height adjustment mechanism through the scissor-type lifting frame 7 does not take up too much space and has a small volume after contraction, which will not affect the overall size and layout of the wheelchair and is suitable for existing wheelchairs.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A manual wheelchair with adjustable wheelbase and lift base, characterized by: The invention comprises a base plate (1), wherein a pair of guide rails (2) are provided at the bottom of the base plate (1), a sliding block (3) moving along the guide rail (2) is provided at both ends of each guide rail (2), a wheel frame (4) is installed between the sliding blocks (3) at the same end, and a running wheel (5) is provided on the wheel frame (4), and an adjusting mechanism (6) for adjusting the wheelbase between the two running wheels (5) is provided at the bottom of the base plate (1); and a seat plate (8) is installed on the upper part of the base plate (1) via a scissor-type lifting frame (7), and a backrest (9) and an armrest (10) are provided on the seat plate (8).

2. A manual wheelchair with adjustable wheelbase and lift base according to claim 1, characterized in that: The adjustment mechanism (6) includes a forward and reverse screw rod (12) provided at the bottom of the base plate (1) and arranged parallel to the guide rail (2), and a movable block (13) is provided on the forward and reverse screw rod (12) and moves toward each other along the forward and reverse screw rod (12), and the movable block (13) is fixed to the wheel frame (4) in a one-to-one correspondence.

3. A manual wheelchair with adjustable wheelbase and lift base according to claim 2, characterized in that: A vertically downward protective enclosure (11) is provided around the seat plate (8), and a reserved hole for adjusting with the scissor-type lifting frame (7) is provided on the protective enclosure (11).

4. A manual wheelchair with adjustable wheelbase and lift base according to claim 2, characterized in that: A rotating shaft (14) is installed at the bottom of the base plate (1), one end of the rotating shaft (14) is connected to one end of the forward and reverse screw rods (12) via a coupling (16), and a rotating handle (15) is provided at the other end of the rotating shaft (14).

5. The manual wheelchair with adjustable wheelbase and lift base according to claim 1, characterized in that: A rubber cushion is provided on the seat plate (8).

6. A manual wheelchair with adjustable wheelbase and lift base according to claim 2, characterized in that: The sliding block (3) and the movable block (13) are both fixed to the wheel frame (4) via positioning bolts.

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